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A student sits on a swivel seat. Initially the student is at rest,holding a spinning bicycle wheel that has an angular velocity of14.2 rad/s (see figure below). The studentturns the spinning wheel upside down, reversing the direction ofits angular velocity. This causes the student to begin to rotate. Find the student's final angular velocity. The moments of inertiaof the wheel and of the student are 0.314kg · m2 and 2.90 kg· m2 respectively.
What is the rms speed of the molecules in low-density hydrogen gas at 0 ^circ {rm C}? (The mass of a hydrogen molecule, rm{H_2} , is 3.32×10-27 kg ).
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 91 μF. What is the potential difference across the capacitor plates?
In a Young's double-slit experiment, the wavelength of the light used is 535 nm (in vacuum), Determine the angle in degrees that locates the second dark fringe
Tritium (3/1 H) is a heavy isoptope of hydrogen, with an atomic mass of 3.016049u. Normal hydrogen has an atomic mass of 1.007825u, find the binding energy per nucleon for titium
A bowling ball (mass 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.38 kg, radius = 0.028 m) may each be treated as uniform spheres. what is the magnitude of the maximum gravitational force that can exert on the other?
A conductor bar ab of length 0.6 m is moving on two conducting rails with a speed v = 3.6 m/s perpendicular to a uniform magnetic field of B = 0.35 T. find the electromotive force in the bar
A deuteron is accelerated from rest through a 10-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.6 T. What is the radius of the resulting circular path
A boat crossing a 143.0 m wide river is directed so that it will cross the river as quickly as possible. Calculate the total distance the boat will travel to reach the opposite shore
A compound microscope has a barrel whose length is 16.0 cm and an eyepiece whose focal length is 1.6 cm. What focal length must the objective have
A parallel-plate capacitor in air has a plate separation of 1.42 cm and a plate area of 25.0 cm2. What is the change in energy of the capacitor
A spring scale is fastened to the ceiling of a railway car. When a 1.0-kg block is hung from the scale, it reads 12 N and is oriented as shown in the figure. What is the approximate acceleration of the car as measured by an observer at rest on the ..
in a cloud chamber experiment a proton enters a uniform 0.340 t magnetic field directed perpendicular to its motion.
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